Detachable knife-blade.



M. H. STERLING. DETAHABLE KNIFE BLADE.

MPLIQATION FILED JUNE 22, `1908.

Patented Nov. 9, 1909.

Suva/Lilo@ ANDREW. s, GRAHAM co.. Fuoro-Llwoompnms wAsmNumn D MARKHQWARD STERLING, OF lBISBVEE,'ARIZONA TERRITORY.

DETAQHABLE KNIFE-BLADE.

Speccation of Letters Patent.

Patente-d Nov. 9, 1999.

`Application filed .Tune 22, 1908. Serial No. 439,851.

To all whom it may concern:

Be it known that I, MARK H. STERLING,

a citizen of the United States, residing at Bisbee, in the county ofCochise and Territory of Arizona, have invented certain new and usefulImprovements in Detachable Knife-Blades; and .I do Vdeclare thefollowing to be a full, clear, and exact description of the invention,such as will enable others, skilled in the art to which it appertains tomake and use the same.

This invention relates to knives having detachable blades.

The object of the invention'is to provide a case or kitchen knife with adetachable blade which is simple in construction and efficient inoperation whereby blades of dif ferent pattern and size may be used witha single handle.

With these and other objects in view, the invention consists of certainnovel features of construction, combination and arrangement of parts, aswill be more fully described and particularly pointed out in theappended claim. f

In the accompanying drawings, Figure l represents a side elevation,partly in section7 of a knife constructed in accordance with thisinvention; F ig. 2 represents a side elevation of a portion of a knifeshowing the outer or wooden handle removed, and with parts broken out;Fig. 43 shows a side elevation partly in section of a portion of a knifeconstructed in accordance with this invention and embodying amodification; Fig. 4 shows an edge view of a knife handle with a portionof the blade connected thereto showing a modified form of the invention;Fig. 5 shows a perspective view of the connecting device for the bladeand handle shown in Fig. 4; Fig. 6 is a top plan or edge view of anothermodification showing the outer handle removed; Fig. 7 shows a sideelevation of a portion of a blade with the stem constructed inaccordance with the form shown in Fig. 6. Fig. 8 is a transverse sectionthrough the knife handle; Fig. 9 is a per spective view of the innermember of the handle detached.

In the embodiment illustrated in Figs. 1 and 2, the blade 1 isconstructed with a fiat stem 2. The handle there shown consists of ametal tube 4, preferably of brass which is* preferably composed of woodor any other suitable material. A steel .ring 6, is mounted on the splitend of the tube 4, and is forced down against the outwardly curved orupturned edges of said tube by a shoulder 7, on the inner face of theouter handle 5, said handle when placed in position forces said ring totightly clamp the shank or stem 3, within the tube 4. A. milled knob 7is detachably mounted on the outer end of the tube 4 and is designed tohold the outer handle 5, securely in position, as shown in Fig. 1. Thishandle 5, is preferably provided with the usual ferrule 8, formed at itsjunction with the blade. The shank or stem 2 Yof the blade 1 preferablytapers t oward its outer end, and when it is desired to remove theblade, the milled kno-b 7 is turned toward the left which unscrews thetube from the shank 2 and permits the blades to be removed.

The form shown in Fig. 3 is similar to that shown in Figs. 1 and 2except the knob 9 at the end of the brass tube 10 is made integraltherewith and the inner end of the tube 10 is screw threaded to engage ascrew threaded shank 11 of the blade 12.

In the form shown in Figs. 4 and 5, the handle is constructed similarlyto that shown in Fig. 3 with the brass tube 13 there shown screwthreaded at its inner end to receive a shank or connecting member 1'4which is detachably connected with the shank 15 of the blade 16. Thisconnecting member 14 is preferably split longitudinally to receive theshank 15 of the blade and is provided with longitudinally spaced pins as17, which pass through spaced apertures in the blade shank and when thesplit portions of this member 14 are forced together and inserted intothe tube 13 firmly clamp said blade between them.

In the forms shown in Figs. 6 and 7, the handle is composed of a metaltube 18, with a knob 19 at its outer end and with its inner end screwthreaded internally to receive the screw threaded end of a connectingshank or member 2O which is riveted at its unthreaded end to the blade21, as shown.

It will be understood that the outer handle is used in connection withall of the forms above described and may be made of any desired orsuitable material and provided with the usual ferrule at its inner end.This handle may be used in connection with a variety of blades ofdierent sizes and shapes, it only being necessary that the stem edges ofsaid end bent outwardly to form :L or connecting member shall beuniformly in all of them.

From the foregoing description, taken in connection with theaccompanying` drawings, the construction and operation of the inventionwill be readily understood Vithout requiring a more extendedexplanation.

Various changes in the form, proportion and the minor details ofconstruction may be resorted to Without departing from the principle orsacriiicing` any of the advantages of the invention, as defined in theappended claim.

l claim as my invention:

ln a knife the combination With, a blade having a shank or tang` at, oneend thereof, a handle comprising` an inner tubular member splitlongitudinally at one end With the stop, a ring slidable on said splitend, a tubular outer member removably lit-ting over said inner memberand ha ving a, shoulder' at its inner end arranged to engage saidclampingl ring to force and hold it in operative position against saidstop termed by the bent ends o1' the tubular inner member, and a capiitting over the outer end of said outer tubular member and detachablyengaged with the outer end ot said inner tubular member.

In testimony whereof l have hereunto sct my hand in presence oit' twosubscribing witnesses.

MARK HOlVARD S'lERLlNG.

'Vitnesses z R. D. STERLING, Jxo. F. Girmi.

